Wire harness

ABSTRACT

To provide a technique for enabling a single exterior member to be easily used for both a region of a wire harness that is disposed in a flat state and a region thereof that is disposed in a bent state. The wire harness includes an exterior member formed in a sheet shape, and a wire disposed overlapping the exterior member in at least a partial region extending along an extension direction of the wire. At least a part of a portion where an insulating covering of the wire and the exterior member overlap is welded. A partial region of the exterior member that extends along the extension direction of the wire is in a flat state, and at least another partial region of the exterior member that extends along the extension direction of the wire is rolled up in a direction intersecting the extension direction of the wire.

TECHNICAL FIELD

The present invention relates to a technique for attaching an exteriormember to a wire in a vehicle wire harness.

BACKGROUND ART

Patent Document 1 discloses a technique for positioning a sheet-shapedexterior member relative to a wire by wrapping tape around each end ofthe exterior member and a portion of the wire that extends from the endswhen attaching the exterior member to the wire.

CITATION LIST Patent Documents

Patent Document 1: JP 2015-72798A

SUMMARY OF INVENTION Technical Problem

Some wire harnesses include a region that is disposed in a flat stateand a region that is disposed in a bent state. In this case, if separateexterior members are attached to the region disposed in a flat state andthe region disposed in a bent state, problems such as an increasednumber of components arise. On the other hand, if a single exteriormember of a molded article is to be used for the region disposed in aflat state and the region disposed in a bent state, problems such as anincrease in the complexity of the shape of the exterior member arise.

Therefore, it is an object of the present invention to provide atechnique for enabling a single exterior member to be easily used forboth a region of a wire harness that is disposed in a flat state and aregion thereof that is disposed in a bent state.

Solution to Problem

To solve the above-described problems, a wire harness according to afirst aspect includes: an exterior member formed in a sheet shape; and awire disposed overlapping the exterior member in at least a partialregion extending along an extension direction of the wire, wherein atleast a part of a portion where an insulating covering of the wire andthe exterior member overlap is welded, and a partial region of theexterior member that extends along the extension direction of the wireis in a flat state, and at least another partial region of the exteriormember that extends along the extension direction of the wire is rolledup in a direction intersecting the extension direction of the wire.

A wire harness according to a second aspect is the wire harnessaccording to the first aspect, wherein at least a part of the portionwhere the insulating covering of the wire and the exterior memberoverlap is ultrasonically welded.

A wire harness according to a third aspect is the wire harness accordingto the first or second aspect, wherein the exterior member is graduallyrolled up from the region of the exterior member that is in a flat statetoward the rolled-up region.

A wire harness according to a fourth aspect is the wire harnessaccording to the first or second aspect, wherein a slit extending froman inner portion of the exterior member to an outer edge of the exteriormember is formed at a boundary between the region that is in a flatstate and the rolled-up region of the exterior member.

A wire harness according to a fifth aspect is the wire harness accordingto any one of the first to fourth aspects, wherein a fixation member forfixing the wire to an attachment target is welded to the exteriormember.

A wire harness according to a sixth aspect is the wire harness accordingto the fifth aspect, wherein the exterior member is maintained in arolled-up state by the fixation member provided in the rolled-up regionof the exterior member.

A wire harness according to a seventh aspect is the wire harnessaccording to any one of the first to sixth aspects, wherein a portionwhere the exterior member is at least double-layered with a surfacethereof on which the wire is disposed located on an innercircumferential side thereof is present in the rolled-up region of theexterior member.

Advantageous Effects of Invention

According to the first to seventh aspects, the wire and the exteriormember are welded together, and, therefore, the exterior member can beeasily rolled up also in a direction intersecting the extensiondirection of the wire. Also, the portion of the exterior member that isrolled up in the direction intersecting the extension direction of thewire has an increased degree of freedom in the bending direction ascompared with the flat portion. This enables a single exterior member tobe easily used for both the region of the wire harness that is disposedin a flat state, and the region thereof that is disposed in a bentstate.

According to the second aspect in particular, welding can be easilyachieved.

According to the third aspect in particular, the exterior member can berolled up without providing a slit.

According to the fourth aspect in particular, the rolled-up region canbe more easily rolled up in a compact manner.

According to the fifth aspect in particular, the fixation member can bereadily attached.

According to the sixth aspect in particular, the exterior member can bereadily maintained in a rolled-up state.

According to the seventh aspect in particular, the entire circumferenceof the wire can be covered by the exterior member.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view showing a wire harness according to anembodiment.

FIG. 2 is a schematic cross-sectional view showing the wire harnessaccording to the embodiment.

FIG. 3 is a perspective view showing a state before rolling an exteriormember.

FIG. 4 is a bottom view shown the state before rolling the exteriormember.

FIG. 5 is a diagram illustrating how ultrasonic welding is performed.

FIG. 6 is a schematic cross-sectional view showing a modification of thewire harness.

FIG. 7 is a schematic perspective view showing another modification ofthe wire harness.

DESCRIPTION OF EMBODIMENTS Embodiment

In the following, a wire harness according to an embodiment will bedescribed. FIG. 1 is a perspective view showing a wire harness 10according to this embodiment. FIG. 2 is a schematic cross-sectional viewshowing the wire harness 10 according to this embodiment. FIG. 3 is aperspective view showing a state before rolling an exterior member 30.FIG. 4 is a bottom view showing the state before rolling the exteriormember 30.

The wire harness 10 is used as wiring that electrically connects variouselectric devices mounted in a vehicle or the like to each other. Here,it is assumed that the wire harness 10 is routed around, for example, aninstrument panel in a vehicle. Of course, the routing location of thewire harness 10 in the vehicle is not limited to the above-describedlocation, and the wire harness 10 may also be routed around a roof, adoor, or the like. Specifically, the wire harness 10 includes anexterior member 30 and a wire 12. The wire harness 10 further includes aconnector 20 and a fixation member 40.

Here, it is assumed that the wire harness 10 is routed along abar-shaped member 70. In the example shown in FIG. 1, the bar-shapedmember 70 is a member extending in three dimensions. Although thebar-shaped member 70 is formed in a cross-sectionally circular shape inthe example shown in FIG. 1, this is not essential; the bar-shapedmember 70 may also have a square shape or the like. Such a bar-shapedmember 70 can be, for example, a member called a reinforcement. When thewire harness 10 is caused to extend along the bar-shaped member 70, thewire harness 10 is also bent in three dimensions. Here, around theabove-described instrument panel, the routing space for the wire harness10 is narrow, and there may be locations where the exterior member 30 tobe attached to the wire harness 10 needs to have a flat shape. On theother hand, when the exterior member 30 attached to the wire harness 10has a flat shape, it is difficult to bend the wire harness 10 in theflat surface, making it difficult to cause the wire harness 10 to extendalong the bar-shaped member 70 extending in three dimensions.Accordingly, for the wire harness 10 according to the present invention,a partial region of the exterior member 30 is formed in a flat shape,and another partial region thereof is formed in a shape that can beeasily bent.

The exterior member 30 is formed in a sheet shape. In the example shownin FIG. 1, the exterior member 30 is formed in a rectangular sheetshape. However, the shape of the exterior member 30 is not limited tothe one described above, and may be changed as appropriate according tothe placement configuration or the like of the wire 12. The exteriormember 30 is a member that is externally mounted to the wire 12. Theexterior member 30 is a member having at least one function ofsoundproofing the wire 12 (muffling, sound absorption, sound insulation,etc.), protecting the wire 12 (wear resistance, tensile resistance,penetration resistance, etc.), dissipating heat from the wire 12,shielding the wire 12, and waterproofing the wire 12. The function ofthe exterior member 30 can be appropriately selected according to theproperties of the wire 12 and the environment or the like of thelocation where the wire 12 is disposed, for example. Here, thedescription is given for an example in which the exterior member 30 is aprotective sheet with abrasion resistance since the wire 12 is disposedin a location where it may be rubbed against surrounding members.

Such a protective sheet is formed of a sheet material such as anon-woven fabric of PVC (polyvinyl chloride), PE (polyethylene), and PP(polypropylene). When the protective sheet is formed of a non-wovenfabric, the protective sheet may be hot-pressed, for example.Alternatively, the protective sheet may be formed by subjecting aspunbonded non-woven fabric or the like to embossing or the like. Thiscan make the protective sheet hard. The abrasion resistance of such aprotective sheet may be derived from the physical properties of itsstructure, or may be derived from the physical properties of itsmaterial. For example, the protective sheet is formed flat in theexample shown in FIG. 1, and it seems that the abrasion resistance ofthe protective sheet can be increased by adopting a configuration inwhich irregularities are formed on the outer surface of this protectivesheet. Also, it seems that the protective sheet can be made hard, forexample, by adopting a configuration in which the non-woven fabric ishot-pressed as described above, thus increasing its abrasion resistance.Also, it seems that the abrasion resistance can be increased, forexample, by adopting a hard material as the material that forms theprotective sheet.

As described above, the exterior member 30 is flat in a partial region,and is rolled up in at least another partial region. In the exampleshown in FIG. 1, opposite ends along the extension direction of the wire12 are rolled up, and a region located therebetween is formed flat. Ofcourse, the ends along the extension direction of the wire 12 may beformed as flat regions, and a rolled-up region may be present betweenthe flat regions. Alternatively, one end along the extension directionof the wire 12 may be formed as a flat region, and the other end mayalso be formed as a rolled-up region. Alternatively, a larger number offlat regions and rolled-up regions than those shown in the drawing maybe arranged.

In the rolled-up region of the exterior member 30, the exterior member30 is at least double-layered (overlapping) with one principal surface31 a located on the inner circumferential side. This allows the exteriormember 30 to cover the entire circumference of the wire 12. However, theexterior member 30 may be rolled up with the other principal surface 31b located on the inner circumferential side. Alternatively, the exteriormember 30 does not need to be double-layered.

Here, slits 32 extending from an inner portion (the inner side portionas viewed in the direction of the normal of the principal surface 31 a)of the exterior member 30 to an outer edge of the exterior member 30 areformed at the boundary between the region that is in a flat state andthe rolled-up region of the exterior member 30. Although these slits 32are formed along a direction orthogonal to the extension direction ofthe wire 12 in the example in FIG. 1, the slit 32 is not limitedthereto. Although these slits 32 are formed as cuts having no width inthe example shown in FIG. 1, the slits 32 may also be formed as recesseshaving a certain width.

The wire 12 is disposed so as to overlap the exterior member 30 in atleast a partial region extending along the longitudinal direction.Although the wire 12 is disposed on only one principal surface 31 a sideof the exterior member 30 in the example shown in FIG. 1, the wire 12may be transferred to the other principal surface 31 b side midway. Atleast one wire 12 may be included. Here, a plurality of wires 12 (threein the example shown in FIG. 1) are included. An insulated wire 12including a core wire 14 and an insulating covering 16 that covers thecore wire 14 (see FIG. 6) is used for each of the wires 12. The corewire 14 is made of a conductive material such as copper or aluminum. Thecore wire 14 may be a solid wire, or may be a stranded wire. Theinsulating covering 16 may be formed by extrusion-molding, for example,a resin such as PVC (polyvinyl chloride), PE (polyethylene) or PP(polypropylene) to the outer circumference of the core wire 14, or maybe formed by baking a varnish or the like that has been applied to theouter circumference of the core wire 14.

At least a part of a portion where the insulating covering 16 of thewire 12 and the exterior member 30 overlap is welded. Consequently, thewire 12 and the exterior member 30 are fixed.

As the means for such welding, ultrasonic welding is adopted here. FIG.5 is a diagram illustrating how ultrasonic welding is performed. Asshown in FIG. 5, ultrasonic welding is generally performed whilesandwiching two members to be welded (here, the wire 12 and the exteriormember 30) between a horn 82 and an anvil 84 of an ultrasonic welder 80.The two members disposed between the horn 82 and the anvil 84 arebrought into a state in which portions thereof that are to be weldedabut against each other.

The horn 82 abuts against one of the two members, and applies ultrasonicvibrations to the one member. Examples of the transmitting mode ofultrasonic vibrations from the horn 82 include longitudinal vibrationand transverse vibration, and the transmitting mode can be appropriatelyselected according to the shape, the physical properties, or the like ofthe members to be welded.

The anvil 84 supports the other of the two members. Although the wiresupporting surface of the anvil 84 is formed as a flat surface in theexample shown in FIG. 5, the wire supporting surface may also be formedas a curved surface.

Then, when ultrasonic vibrations are applied to the one member from thehorn 82 in a state in which the two members to be welded are sandwichedbetween the horn 82 and the anvil 84, friction or compression or thelike is caused by the applied ultrasonic vibrations, resulting inthermal energy. Consequently, a portion of the abutment surface ismelted by the thermal energy, thus joining the two members. Note thatonly one of the two members may be melted, or both of the two membersmay be melted. It is considered that this is determined according to thephysical properties or the like of the materials that form the twomembers.

In the case of performing ultrasonic welding, in general, marks formedas a result of the horn 82 having been pressed against (hereinafterreferred to as “horn marks 34”) may be left on the members. Therefore,the horn marks 34 may be left on the wire harness 10 as well. It isconceivable that such horn marks 34 may have, for example, a shapecorresponding to the shape of irregularities formed on the horn 82.

The region of the wire 12 that is welded to the exterior member 30 inthe longitudinal direction of the wire 12 may extend continuously as astring along the longitudinal direction of the wire 12 without beingdiscontinued, or may include some discontinued sections along thelongitudinal direction of the wire 12. In the example shown in FIG. 4,ultrasonic welding is intermittently performed such that somediscontinued sections are included along the longitudinal direction ofthe wire 12. At this time, the range of one welding location, theinterval between adjacent welding locations, or the like may be set asappropriate according to the joining strength or the like. Althoughultrasonic welding is intermittently performed with a fixed pitch alongthe longitudinal direction of the wire 12 in the example shown in FIG.4, there may be a portion where ultrasonic welding is performed with adifferent pitch.

The region of the wire 12 that is welded to the exterior member 30 inthe circumferential direction of the wire 12 may be the whole region ora partial region along the circumferential direction. When a partialregion of the wire 12 along the circumferential direction is welded,that region may be a region that is equal to or smaller than a half ofthe circumference, or may be a region that is equal to or smaller than aquarter of the circumference.

In performing ultrasonic welding, at least one of the two members (here,the insulating covering 16 of the wire 12 and the exterior member 30)contains a thermoplastic resin in the abutment surface. In this case, itis preferable that both of the two members contain a thermoplastic resinin the abutment surfaces, and that the melting points of the respectivethermoplastic resins are at about the same level. Furthermore, it ispreferable that both of the two members contain the same thermoplasticresin in the abutment surfaces. This allows both of the two members tobe melted, thus making it possible to increase the joining strength.

As for the applications, such a wire 12 may be a power line, or may be asignal line. As for the thickness, the wire 12 may be thick, or may bethin. As for the cross-sectional shape, the wire 12 may be a round wire,or may be a square wire. Here, in general, at the start of ultrasonicwelding, the abutment surfaces of the two members preferably have aconvex shape in order to reduce the contact area. In this respect, itcan be said that a round wire has a shape suitable for ultrasonicwelding because it has a convex shape at every position in thecircumferential direction and it is therefore not necessary to take itsplacement orientation into consideration.

Each end of the above-described wire 12 is incorporated into a connector20. Then, in a state in which the wire harness 10 of the presentembodiment is disposed at a placement target location in a vehicle orthe like, the connectors 20 are connected to connectors 20 of variouselectric devices that are mounted in the vehicle or the like.Accordingly, the wire harness 10 of the present embodiment is used aswiring that electrically connects various electric devices mounted inthe vehicle or the like to each other.

Here, the connectors 20 are also welded to the exterior member 30. Aportion of the outer surface of the connector housing 21 of eachconnector 20 overlaps the exterior member 30, and at least a part of theoverlapping portion is welded. The connector housing 21 is a member thathas been molded in one piece (injection-molded) using a resin or thelike as the material, for example. Although the horn marks 34 are lefton the exterior member 30 side in the example shown in FIG. 4, the hornmarks may be left on the connector housing 21 side.

Note that it is preferable that the welding location of the connectorhousing 21 is a location that does not impede fitting to the counterpartconnector. For example, although a portion around the portion of eachconnector housing 21 from which the wires 12 extends to the outside iswelded in the example shown in FIG. 4, a protruding piece may be formedby causing a portion of the outer surface of the connector housing 21 toprotrude, and the protruding piece may be welded.

However, it is not essential that the connectors 20 are welded to theexterior member 30. In this case, the connectors 20 may also be fixed tothe exterior member 30 with another means such as adhesive tape or anadhesive, or are not fixed to the exterior member 30 at all.

Here, as shown in FIG. 2, pressure-welding type connectors 20 areadopted as the connectors 20. More specifically, each connector housing21 is made up of a first member 23, and a second member 24 that can becombined with the first member 23. The first member 23 is capable ofholding a pressure-welding terminal 26 such that a pressure-weldingportion 27 of the pressure-welding terminal 26 that can bepressure-welded to the insulated wire 12 is exposed to the outside.Also, the first member 23 houses a counterpart connection portion 28 ofthe pressure-welding terminal 26 that is connected to the counter partconductor such that the counterpart connection portion 28 can beconnected to the counterpart conductor. The second member 24 is disposedopposite to the portion of the first member 23 that holds thepressure-welding portion 27, and is capable of pressing the insulatedwire 12 toward the pressure-welding portion 27. Then, by pressing theinsulated wire 12 toward the pressure-welding portion 27 by the secondmember 24, without the insulated wire 12 being stripped off, in a statein which the insulated wire 12 is positioned on the pressure-weldingportion 27 of the pressure-welding terminal 26 held by the first member23, a part of the pressure-welding portion 27 penetrates through theinsulating covering 16 of the insulated wire 12 so as to abut againstthe core wire 14, and is connected thereto.

Here, in the example shown in FIG. 4, all the three wires 12 are weldedto the exterior member 30. However, when the wire harness 10 includes aplurality of wires 12, a wire 12 that is not welded to the exteriormember 30 may also be included. In the example shown in FIG. 4, all thethree wires 12 are welded in the same manner. However, when the wireharness 10 includes a plurality of wires 12 that are welded to theexterior member 30, at least a part of the welding mode such as weldingmeans or welding regions may be different among the wires.

In the example shown in FIG. 4, all the three wires 12 are connected tothe same connector 20. However, when the wire harness 10 includes aplurality of wires 12, a wire 12 that is connected to a differentconnector 20 may be included.

In the example shown in FIG. 4, the wires 12 are disposed linearly.However, the wires 12 may also be disposed in a bent state. Then, whenthe wire harness 10 includes a plurality of wires 12, a wire 12 that isdisposed linearly and a wire 12 disposed in a bent state may both bepresent. In this case, a branch may be formed in the plurality of wires12 on the exterior member 30.

In the example shown in FIG. 4, the wires 12 are disposed at positionsclose to the center in the width direction relative to the exteriormember 30. However, the path along which the wires 12 are disposedrelative to the exterior member 30 is not limited to the one describedabove. For example, the wires 12 may be disposed at positions toward anend in the width direction relative to the exterior member 30. Forexample, the wires 12 may extend obliquely relative to the exteriormember 30.

Each fixation member 40 is a member for fixing the wires 12 to anattachment target such as a vehicle body panel or the bar-shaped member70, etc. Here, the fixation member 40 is also welded to the exteriormember 30. Although the horn marks 34 are left on the exterior member 30side in the example shown in FIG. 3, the horn marks may be left on thefixation member 40 side. Here, the fixation member 40 includes a columnportion 44, and a blade portion 46 extending from a distal end of thecolumn portion 44, and is called a clamp or a clip that has been moldedin one piece (injection-molded) using a resin or the like as thematerial.

The fixation member 40 is provided with a plate portion 42 that supportsthe column portion 44, and the plate portion 42 and the exterior member30 are welded together. As the plate portion 42, an existing componentsuch as a protruding piece to be tape-wrapped of a so-called tape clamp,or a dedicated component may be newly provided.

In the example shown in FIG. 1, the fixation member 40 is attachedprotruding from the other principal surface 31 b side opposite from theone principal surface 31 a on which the wires 12 are disposed. Thefixation member 40 is provided at a portion where ends of the exteriormember 30 are to overlap in two layers in a region that is to be rolledup. Accordingly, as shown in FIG. 2, when the exterior member 30 isrolled up so as to surround the wires 12, the rolled-up state can bemaintained by passing the fixation member 40 through the portion of theexterior member 30 that overlaps the fixation member 40. As shown inFIG. 3, in the region of the exterior member 30 that is to be rolled up,a through hole 33 is preferably formed in a portion where each fixationmember 40 is provided when the exterior member 30 is rolled up. Thisfacilitates passage of the fixation member 40 through the portion thatoverlaps the fixation member 40. However, the fixation member 40 may beattached protruding from the one principal surface 31 a side.Alternatively, the fixation member 40 may be provided in the flatregion.

With the wire harness 10 configured in the above-described manner, thewires 12 and the exterior member 30 are welded together, and, therefore,the exterior member 30 can be easily rolled up also in a directionintersecting the extension direction of the wires 12. Then, the portionof the exterior member 30 that is rolled up in a direction intersectingthe extension direction of the wires 12 has an increased degree offreedom in the bending direction as compared with the flat portion.Accordingly, a single exterior member 30 can be easily used for both ofthe region of the wire harness 10 that is disposed in a flat state andthe region thereof that is disposed in a bent state.

Since at least a part of the portion of the wire 12 where the insulatingcovering 16 and the exterior member 30 overlap is ultrasonically welded,welding can be easily achieved.

Since the slits 32 extending from an inner portion of the exteriormember 30 to an outer edge of the exterior member 30 are formed at theboundary between the region that is in a flat state and the rolled-upregion of the exterior member 30, the rolled-up region can be moreeasily rolled up in a compact manner. Furthermore, the region in a flatstate is prevented from being rolled up.

Since the fixation member 40 for fixing the wire 12 to an attachmenttarget is welded to the exterior member 30, the fixation member 40 canbe readily attached.

Since the exterior member 30 is maintained in a rolled-up state by thefixation member 40 provided in the rolled-up region of the exteriormember 30, the exterior member 30 can be readily maintained in arolled-up state.

Since a portion where the exterior member 30 is at least double-layeredwith the one principal surface 31 a on which the wire 12 is disposedlocated on the inner circumferential side is present in the rolled-upregion of the exterior member 30, the entire circumference of the wire12 can be covered by the exterior member 30.

Modification

FIG. 6 is a schematic cross-sectional view showing a modification of thewire harness 10.

A wire harness 110 according to the modification is different from thewire harness 10 according to the embodiment in that a portion of theexterior member 130 in the width direction is wrapped around abar-shaped member 90.

Although one principal surface 131 a of the exterior member 130 on whichthe wires 12 are disposed faces the bar-shaped member 90 side in theexample shown in FIG. 6, this is not essential, and the other principalsurface 131 b side may face the bar-shaped member 90 side.

FIG. 7 is a schematic perspective view showing another modification ofthe wire harness 10.

A wire harness 210 according to the modification is different from thewire harness 10 according to the embodiment in that an exterior member230 is provided with no slit 32.

When such an exterior member 230 that is provided with no slit 32 isrolled up, the exterior member 230 is gradually rolled up from theregion in a flat state toward the rolled-up region. Specifically, in theexample shown in FIG. 7, looking at the wires 12 in a portion that is ina flat state, i.e., a portion located between a portion covering thewires 12 from one side and a portion completely covering around thewires 12 in a rolled-up region, the region covered by the exteriormember 230 in the circumferential direction gradually changes in thelongitudinal direction.

When no slit 32 is provided, the structure of the rolled-up portion isconsidered to be as follows. That is, a case can be considered where theportion completely covering around the wires 12 in the rolled-up regionis a portion where which the radius of curvature is smallest in theexterior member 30, and toward that portion, the radius of curvaturegradually decreases from the portion in a flat state. Alternatively, acase can also be considered where the radius of curvature is constant inthe portion completely covering around the wires 12 in the rolled-upregion, and a portion located in an intermediate portion leadingthereto; however, the length of a bent portion of the exterior member 30gradually increases toward the portion completely covering around thewires 12. Furthermore, a case can also be considered where both theradius of curvature and the length of the bent portion change.

Thus, it is possible to roll up a partial region of the exterior member230, while maintaining another partial region thereof in a flat state,even when the exterior member 230 is provided with no slit 32. In thiscase, it is possible to save the time and effort in providing the slits32.

Other Modifications

Although the wire harness 10 has been described as being routed alongthe bar-shaped member 70 in the embodiment, this is not essential. Forexample, it is also conceivable that the wire harness 10 is disposedalong a plate-shaped member such as a vehicle body panel or a roof.

Although the welding means has been described as being ultrasonicwelding thus far, the welding means is not limited to ultrasonicwelding. For example, the welding means may also be heat welding such asresistance welding, or laser welding or the like.

Although the protective sheet has been described as having abrasionresistance, this is not essential. It is also conceivable that theprotective sheet has penetration resistance. Although the exteriormember 30 has been described as being a protective sheet in theembodiment, this is not essential. The exterior member 30 may also be asoundproofing sheet, a shield member, or a heat dissipation member, ormay function as a tension member.

Although the insulating covering 16 that covers immediately outside thecore wire 14 of one wire 12 has been described as being directly weldedto the exterior member 30 thus far, this is not essential. For example,it is also conceivable that, in a wire including a plurality ofinsulating coverings, such as one shield wire including a core wire, afirst insulating covering that covers the core wire, a shielding layerthat covers the first insulating covering, and a second insulatingcovering that covers the shielding layer, the outermost insulatingcovering and the exterior member 30 are welded together. For example, itis also conceivable that, in a cable including a plurality of wires 12,and a sheath that covers around the plurality of wires 12, the sheathand the exterior member are welded together. In this case, the sheathcan be considered as one insulating covering of the wires 12.

Although the pressure-welding connector 20 has been described as beingused as the connector 20 thus far, this is not essential. For example,it is also possible to use a connector that houses a crimped terminalthat has been crimped to an end of each wire 12.

The configurations described in the embodiment and the modifications maybe combined as appropriate as long as there are no mutualinconsistencies. For example, it is conceivable that the exterior member30 is formed by a combination of a plurality of sheet materials havingseparate functions.

Although the present invention has been described above in detail, theforegoing description is in all aspects illustrative and the inventionis not limited thereto. It will be appreciated that numerousmodifications not illustrated herein can be made without departing fromthe scope of the present invention.

LIST OF REFERENCE NUMERALS

10 Wire harness

12 Wire

14 Core wire

16 Insulating covering

20 Connector

21 Connector housing

23 First member

24 Second member

26 Pressure-welding terminal

27 Pressure-welding portion

28 Counterpart connection portion

30 Exterior member

31 a One principal surface

31 b The other principal surface

32 Slit

34 Horn mark

40 Fixation member

42 Plate portion

44 Column portion

46 Blade portion

80 Ultrasonic welder

82 Horn

84 Anvil

The invention claimed is:
 1. A wire harness comprising: an exteriormember formed in a sheet shape; a wire having a first connector and asecond connector, wherein each of the wire, the first connector and thesecond connector is disposed overlapping the exterior member in at leasta partial region extending along an extension direction of the wire; anda fixation member that fixes the wire to an attachment target and weldedto the exterior member, wherein at least a part of a portion where aninsulating covering of the wire, and each of the first and secondconnectors, and the exterior member overlap are ultrasonically welded,wherein a partial region of the exterior member that extends along theextension direction of the wire is in a flat condition, and at leastanother partial region of the exterior member that extends along theextension direction of the wire is rolled up in a direction intersectingthe extension direction of the wire, and wherein the exterior membercomprises a horn mark at each location of each ultrasonic weld.
 2. Thewire harness according to claim 1, wherein the exterior member is rolledup from the region of the exterior member that is in a flat conditiontoward the rolled-up region of the exterior member.
 3. The wire harnessaccording to claim 1, wherein a slit extending from an inner portion ofthe exterior member to an outer edge of the exterior member is formed ata boundary between the region that is in a flat condition and therolled-up region of the exterior member.
 4. The wire harness accordingto claim 1, wherein the exterior member is maintained in a rolled-upcondition by the fixation member provided in the rolled-up region of theexterior member.
 5. The wire harness according to claim 1, wherein aportion where the exterior member is at least double-layered with asurface thereof on which the wire is disposed located on an innercircumferential side thereof is present in the rolled-up region of theexterior member.